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to phrases
couche d'ozone
environ.
臭氧层
(在大气层的上层,臭氧浓度明显增强,其中臭氧对于保证大气辐射的平衡起到了重要的作用。)
couche d 'ozone:
27 phrases
in 3 subjects
Environment
3
Name of organization
1
United Nations
23
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